Leviticus 23:29-31

American Standard Version

²⁹ For whatsoever soul it be that shall not be afflicted in that same day; he shall be cut off from his people. ³⁰ And whatsoever soul it be that doeth any manner of work in that same day, that soul will I destroy from among his people. ³¹ Ye shall do no manner of work: it is a statute for ever throughout your generations in all your dwellings.